Notes:-Leaves from the Llangattock Breviary are among the collections of the following institutions: Harvard, U.C. Berkeley, American Academy in Rome, Michigan State, U. South Carolina, University of Washington, Hill Monastic Manuscript Library, Dartmouth College, the Louvre Museum, and Museo Schifanoia in Ferrara. Many leaves are still offered for sale in the book trade.

Acknowledgments: - We are grateful to Federica Toniolo for her generous consultation.